This is a hub for software I find useful enough to recommend. Use it wisely.
Some software may be, you know, old.
I use Opera on Windows, Mac, and Linux computers. I think you will not find a better, more stable, nor faster browser out there. Additionally, Opera has functionality built in which allows you to actively synchronize your bookmarks across all installations.
Revo-Uninstaller will thoroughly remove an old application (taking the time to scour your registry and file system in so doing).
Spybot is by far my favorite piece of spyware protection. Be sure and check out its TeaTimer registry monitor as well.
Give Windows some sadly lacking functionality with Virtual Dimension. It will give you multiple virtual desktops with which to work.
Diskeeper is a replacement for Windows defragmentation tool (or degredation tool if you prefer). Get it, use it, pay for it. It’s worth it.